XTR300AIRGWT Texas Instruments, ±20 mA Current Loop Transmitter 20-Pin QFN

The Texas Instruments XTR300 is a complete output driver for industrial and process control applications. The output can be configured as current or voltage by the digital I/V select pin. No external shunt resistor is required. Only external gain-setting resistors and a loop compensation capacitor are required. The separate driver and receiver channels provide flexibility. The Instrumentation Amplifier (IA) can be used for remote voltage sense or as a high-voltage, high-impedance measurement channel. In voltage output mode, a copy of the output current is provided, allowing calculation of load resistance.

USER-SELECTABLE: Voltage or Current Output
+40V SUPPLY VOLTAGE
VOUT: ±10V (up to ±17.5V at ±20V supply)
IOUT: ±20mA (linear up to ±24mA)
SHORT- OR OPEN-CIRCUIT FAULT INDICATOR PIN
NO CURRENT SHUNT REQUIRED
OUTPUT DISABLE FOR SINGLE INPUT MODE
THERMAL PROTECTION
OVERCURRENT PROTECTION
SEPARATE DRIVER AND RECEIVER CHANNELS
DESIGNED FOR TESTABILITY

4mA-to-20mA Current-Loop Communication

Current loop systems are used in electrically noisy industrial environments for sending analogue sensor data over long distances of 300m or more.